KR101932156B1 - anchor - Google Patents

Abstract

The present invention relates to an anchor for fixing a fixed object on a construction surface (floor or wall surface) such as a concrete or an ALC panel while gradually expanding the wings of the widening sleeve as the extension guide portion is lifted simultaneously with rotation, and a construction method using the anchor .

Description

Anchor {anchor}

The present invention relates to an anchor for fixing a workpiece on a construction surface (floor or wall surface) such as a concrete or an ALC panel while gradually expanding the plurality of blades of the expansion sleeve as the expansion guide portion is raised at the same time as the expansion guide portion is rotated, and a construction method using the anchor .

In general, anchor (or anchor bolt) is used to fix a fixed object such as a flange and a steel frame to a floor surface or a wall surface (hereinafter referred to as a construction surface) such as a building or furniture. Anchor is used for fixing the wall made of a granite material to be used for aesthetic appearance to the concrete wall.

Such a conventional anchor 1 has been proposed in the patent literature.

8 and 9, the anchor 1 of the patent document is inserted and embedded in the mounting hole 5 of the concrete structure in a state where the bolt member 2 and the cover member 3 are assembled, The flat washer 41 and the spring washer 42 are successively fitted to the portion of the male screw portion 21 of the bolt body 2 protruding from the bolt body 5 and then the nut 4 is screwed.

When the nut 4 is screwed when the anchor 1 having the above-described structure is installed on the installation surface, the bolt body 2 is not rotated by the rotation preventing groove 23 and is screwed by the screw tightening force of the nut 4 The conical body 31 of the bolt body 2 is inserted into the conical body 31 of the cover body 3 and the conical body 31 is forcibly opened. The end portion of the conical body 31 is widened more widely so that the inner circumferential surface of the mounting hole 5 is further extended to the inner circumferential surface of the mounting hole 5. [ It will become deeply penetrated.

However, as described above, since the bolt body 2 is excessively protruded to the outside at the time of installation, the work is inconvenient, and the operator's feet may fall over the protruded bolt body 2, There was a problem of safety such as tearing.

In addition, the bolt body 2 was excessively exposed to the outside, and the appearance of the appearance was not good.

As shown in FIGS. 10A and 10B, the other anchor 100 of the related art is inserted into the hole of the sleeve 300 and includes a metal bolt 200 having a head 230, ; The lower portion of the sleeve 300 includes a fastener 400 having a portion of the sleeve 300 inserted into the hole of the sleeve 300 and having an enlarged portion 430 having a diameter larger than the inner diameter of the sleeve 300 do.

The fastener 400 has an internally threaded portion 450 which is fastened to the threaded portion 250 of the bolt 200.

When the head 230 of the bolt 200 is rotated to fasten the bolt 200 and the fastener 400, the fastener 400 coupled to the lower end of the sleeve 300 is gradually introduced into the sleeve 300, (400) rises.

In this case, the fastener 400 is formed with an enlarged portion 430 whose diameter gradually increases toward the lower portion. As the fastener 400 rises and the enlarged portion 430 rises, .

When the conical fixture 400 coupled to the lower portion of the sleeve 300 is lifted while being inserted into the sleeve 300 as described above, the incision 350 formed at the lower end of the sleeve 300 gradually expands, The cut portion 350 of the sleeve 300 is caught by the inner surface of the installation hole 600 and strongly presses the inner wall surface of the sleeve 300 as shown in FIG. 10B, thereby firmly fixing the sleeve 300, So that the anchor 100 can be securely fixed.

Such a rigid fixation of the sleeve 300 not only ensures a firm fixation by the bolts 200 inserted into the sleeve 300 but also exposes only the head 230 of the bolt 200 to the outside after installation, It is possible to quickly and easily carry out the work without any difficulty in disassembling the bolt 200. [

The conventional anchors as described above have the following problems because the conical extension portion is a non-rotating up-and-down expansion type.

Since the conical expanding portions 22 and 430 vertically rise upward and the incised portions 34 and 350 are expanded, it is necessary to pull up the incised portions 34 and 350 with a large force.

The lower ends of the cutouts 34 and 350 are momentarily hooked on the conical expanding portions 22 and 430 so that the fastening adhesive is broken by the movement of the sleeve 3 and 300, Do not play the role properly.

Also, since the incision portions 34 and 350 scratch vertically only as the conical expanding portions 22 and 430 are lifted, there is a high possibility that the conical expanding portions 22 and 430 slip down, The role of one of the incisions 34 and 350 may be weakened.

10A and 10B, since the female screw 450 is formed on the conical expanding portion 430, the thickness of the female screw 450 is reduced as much as the female screw 450 is formed. Therefore, the same pulling force The diameter of the conical expanding portion 430 must be increased inevitably. In such a case, the unnecessary enlargement of the hole may be unnecessary.

10B, the frictional force between the conical expanding portion 430 and the sleeve 300 (due to the tight fit) becomes greater than the fastening force between the female screw 450 and the bolt 250, causing idling. In order to prevent idling, a first striking punching operation is required for the sleeve 300, and there is a possibility that foreign matter may enter the inside of the female screw 450.

Also, due to the characteristics of the concrete, the final height after expansion of the anchor is different. Therefore, if the size of the bolt 200 is shortened, the bearing force is reduced.

In addition, the constant grounding force is closely related to safety. However, when the threaded connection depth between the bolt 250 and the female screw 450 is higher than the reference,

In addition, since the bolt 250 is fastened to the female screw 450, the gap between the bolt 250 and the sleeve 300 is 2 mm or more larger than the conventional one. Therefore, the anchor, which requires tight tightening, It plays a role.

Korean Utility Model Publication No. 20-2011-0007769

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide an anchor which is remarkably excellent in workability, safety, The present invention has been made in view of the above problems.

In order to achieve the above-mentioned object, the anchor according to claim 1 of the present invention includes a conical portion having a lower surface larger than the upper surface, a male screw shaft portion extending from the upper surface of the conical portion, and a tool seat groove formed on the upper surface of the male screw shaft portion An extension guide portion A widening sleeve including a plurality of vanes formed at the lower end of the conical portion by an incision groove; And a non-rotating cylinder formed with a female screw to which the male screw shaft portion is fastened. The enlarged guide portion is expanded while expanding while rotating with respect to the non-rotating cylinder.

In the anchor according to claim 2 of the present invention, the non-rotating cylinder includes a cylindrical body having the female screw formed therein and a rotation preventing piece formed on an outer peripheral surface of the cylindrical body.

In the anchor according to claim 3 of the present invention, a first depressed portion and a second depressed portion having a small inner diameter are formed in the cylinder, and the female screw has a first female screw formed at the first depressed portion, As shown in Fig.

In the anchor according to claim 4 of the present invention, the first depressed portion is disposed on the upper side of the cylinder, and the second depressed portion is disposed on the lower side of the cylinder.

In the anchor according to the fifth aspect of the present invention, the male screw shaft portion is fastened to at least a part of the second female screw, and a bolt for fixing a fixed object is fixed to the remaining part of the first female screw or the first female screw and the second female screw Respectively.

According to a sixth aspect of the present invention, there is provided an anchor construction method comprising: drilling a hole in a construction surface; Inserting an anchor assembled in order of an extension guide, a widening sleeve having a plurality of blades, and a non-rotating cylinder into the hole; Rotating the cylindrical non-rotating cylinder to insert the tool into the extension guide portion; When the extension guide portion is rotated by the tool, the wing is expanded as it is coupled with the non-rotating cylinder and is lifted, so that the anchor is inserted into the hole.

In the method of constructing an anchor according to claim 7 of the present invention, a step of injecting a chemical tube into the hole after the hole is pierced, a step of inserting the anchor into the hole to pop the chemical tube, And placing the workpiece on the work surface after the step of engraving the workpiece, and fastening the workpiece fixing bolt to the non-rotating cylinder.

The present invention has the following effects.

Since the extension guide portion is pulled into the inside of the widening sleeve while being rotated upward, it is convenient to enter the widening guiding portion if it receives less resistance than the inside of the widening sleeve only by the upward force without rotating.

In addition, since the spiral shape scratch is applied to the outer circumferential surface of the extension guide portion by the friction with the lower end of the widening sleeve, the spiral shape scratch serves to prevent the phenomenon such as closure of the extension guide portion.

Further, since the rotation of the extension guide portion is performed by the tool, the movement of the expansion sleeve can be minimized because the tool presses downward with a force enough to rotate the extension guide portion. Minimizing the movement of the widening sleeve can minimize the deterioration of the bonding force because the wing of the widening sleeve is widened in the rapid hardening adhesive so that it hardens as well.

Further, since the tool is pushed so that the extension guiding portion rotates, a downward reaction force acts on the non-rotating cylinder screwed with the extension guiding portion, so that there is no need to provide a separate rising preventing member in the non-rotating cylinder.

In addition, when the bonding force is deteriorated over a long period of time, the bolt for fixing the fixture is released and the tool is inserted into the non-rotating cylinder.

Further, since the tool is rotated by the tool, idle rotation of the extension guiding portion does not occur.

Further, since the non-rotating cylinder enters the inner surface of the hole of the installation surface in a substantially press-fit form, the anchor can secure a sufficient supporting force with respect to the hole.

In addition, since the non-rotating cylinder is inserted in such a state that it is not exposed to the holes, the final height is constant even after the expansion of the anchor, and the supporting force can be kept constant.

In addition, since the non-rotating cylindrical female screw is formed in the first depressed portion and the second depressed portion, when the female screw is too long when fastened to the fixed object fixing bolt (that is, the female screw is formed in the entire lengthwise direction of the non- (When it is chewed, it is troublesome to pull out again and adjust the rotation axis exactly).

Further, since the non-rotating cylindrical female screw is formed in the first depressed portion and the second depressed portion, it can be fastened to the male screw shaft portion at any position of the non-rotating cylinder, and the assembling speed is fast.

Further, since the non-rotating cylinder is inserted so as not to be exposed to the holes, it is possible to tighten the bolts by selecting them according to the size, and the outer appearance is very good.

Further, the widening sleeve and the non-rotating cylinder are divided so that the cutting grooves of the widening sleeve can be easily processed by a press, and the female threading of the non-rotating cylinder is also easy.

In addition, instead of directly injecting the adhesive into the hole, a hardened portion blocking the outlet of the adhesive gun must be removed when the adhesive is injected, by putting a glass tube filled with an adhesive or a hardening agent or a chemical tube filled in the vinyl tube into the hole, It is very good in the workability because only the amount of the chemical tube is put into the hole and it is built into the feeling of the constructor without knowing the capacity properly.

1 is an exploded perspective view of an anchor according to a preferred embodiment of the present invention;
2 is an exploded perspective view showing the anchor of Fig.
Fig. 3 is a sectional view of Fig. 1; Fig.
Figs. 4A to 4E are cross-sectional views showing the procedure of installing the anchor of Fig.
5 is a sectional view of a used state in which a fixed object is fixed to the anchor shown in Fig.
6 is a cross-sectional view of a used state in which another fixed object is fixed to the anchor of Fig. 1 fixed to a wall surface;
FIGS. 7A to 7D are sectional views showing a procedure for installing the anchor of FIG. 1 on the floor by using a chemical tube. FIG.
8 is a front view of an anchor assembly in a conventional state.
Fig. 9 is an operating state of the anchor of Fig. 8; Fig.
10A and 10B are cross-sectional views showing the state of use of another conventional anchor.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing an anchor of Fig. 1, Fig. 3 is a sectional view of Fig. 1, Figs. 4A to 4E are sectional views of an anchor according to a preferred embodiment of the present invention, Fig. 5 is a cross-sectional view of a used state in which a fixed object is fixed to the anchor of Fig. 4E, Fig. 6 is a cross-sectional view showing a state in which another fixed object is fixed to the anchor of Fig. And FIGS. 7A to 7D are cross-sectional views showing the procedure of installing the anchor of FIG. 1 on the floor using the chemical tube.

1 to 3, the anchor 1000 according to the present embodiment includes an extension guide portion 1100, a widening sleeve 1300 fitted to the extension guide portion 1100, Rotating cylinder (1500).

The extension guide portion 1100 includes a conical portion 1110 which is wider than the upper surface 1113, a male screw shaft portion 1130 which extends from the upper surface of the conical portion 1110 and a male screw shaft portion 1130 which is formed on the upper surface of the male screw shaft portion 1130 And a tool seat groove 1150.

The conical portion 1110 has a trapezoidal cross section, and its outer peripheral surface 1115 is inclined.

The male screw shaft portion 1130 includes a shaft rod 1131 extending from an upper surface 1113 of the conical portion 1110 and a male screw 1133 formed on a part or entire peripheral surface along the longitudinal direction of the shaft rod 1131.

The tool groove 1150 can be formed as a straight line, a cross or a wrench groove (socket) on the upper end of the shaft rod 1131.

The widening sleeve 1300 is sandwiched between the conical portion 1110 and the male screw shaft portion 1130.

The widening sleeve 1300 includes a plurality of wings 1310 that are divided by a longitudinally cut incision groove 1320. That is, the widening sleeve 1300 is cylindrical when the wing 1310 is not widened (gradually widening outward).

It is preferred that the wings 1310 are implemented with four at 90 degree intervals or three at 120 degree intervals.

The lower end of the incision groove 1320 is open and the upper end is closed.

C-shaped grooves 1330 are formed at the upper end of the incision groove 1320 and the incision grooves 1320 extend from the open portion of the C-shaped groove 1330 to communicate with each other.

The C-shaped groove 1330 helps the wing 1310 to be expanded smoothly.

The lower end 1311 of the widening sleeve 1300 is caught by the outer peripheral surface 1115 of the conical portion 1110 as shown in Figs. 1 and 3 when the widening guide portion 1100 is fitted from below the widening sleeve 1300. [

The cutout groove 1320 and the C-shaped groove 1330 are referred to as grooves because they are grooves when viewed from the longitudinal direction, and are, of course, through holes when viewed from the radial direction.

In addition, an enlarged extension cutout groove 1325 is formed at the lower end side of the cutout groove 1320.

The extension cutout groove 1325 reduces the contact area with the outer circumferential surface 1115 of the conical portion 1110 and smoothly starts the rotation and elevation of the initial extension guide portion 1100.

The nonrotating cylinder 1500 has a cylindrical shape that is considerably longer than the expansion sleeve 1300 and has a cylindrical body 1510 formed with a female screw 1541 to which the male screw 1133 is fastened, (Not shown).

The first depressed portion 1530 and the second depressed portion 1540 are formed in the cylinder 1510 so as to have a smaller inner diameter than the non-depressed portion.

A first female thread 1531 is formed on the inner surface of the first depression 1530 and a second female thread 1541 is formed on the inner surface of the second depression 1540. The second female thread 1541 is a female thread 1541.

The first depressed portion 1530 is disposed in the vicinity of the upper side of the cylinder 1510 and the second depressed portion 1540 is disposed in the lower side of the cylinder 1510.

The male screw 1133 of the male screw shaft portion 1130 is fastened to at least a part of the second female screw thread 1541 and the remaining part of the first female screw thread 1531 and the second female screw thread 1541 The remaining fixture bolt 200 is fastened to the remaining female screw portion.

For example, when the entire female thread is formed along the longitudinal direction of the cylinder 1510, since the male thread of the fixture fixing bolt 200 is not correctly straightened and chewed when fastened, the first female thread 1531 and the second female thread 1541) with no thread.

Of course, the fixed object fixing bolt 200 may be fastened only to the first female screw thread 1531 according to its length.

The rotation preventing piece 1550 is a plurality of protruding pieces formed along the longitudinal direction of the cylinder 1510. The protruding piece 1550 has a height higher as it goes up, and when it is inserted into the hole 600, Let them enter.

In the detailed description and claims of the present invention, "non-rotation" means that the extension guide portion 1100 is raised by the fastening force of the fastening elements even if "fine rotation (for example, rotation caused by a minute clearance caused by digging) , Thereby causing wings 1310 to expand.

The tool seat groove 1150 is for rotating the extension guide portion 1100 with the tool T. As the extension guide portion 1100 rotates, the male screw shaft portion 1130 is fastened along the first female screw thread 1541, .

That is, the anchor point of the present embodiment is to cause the wings 1310 to be opened while the extension guide portion 1100 is lifted at the same time as the rotation.

The main features of such an ascending anchor 1000 will be described in detail through the construction method shown in Figs. 4A to 4E.

4A to 4E, the method of constructing the anchor 1000 according to the present embodiment includes the steps of drilling the hole 600 in the construction surface 601 (FIG. 4A) and the step of drilling the hole 600 in the hole 600 The anchor 1000 assembled in the order of the extension guide 1100, the widening sleeve 1300 having a plurality of blades and the non-rotating cylinder 1500 as shown in FIG. 1, A step (FIG. 4C) of inserting the tool T into the hole 600, a step (FIG. 4D) of inserting the tool T into the extension guide portion 1100 by inserting the tool T through the interior of the non-rotating cylinder 1500, Rotating the extension guide part 1100 and connecting the wings 1310 of the widening sleeve 1300 to the side surface of the hole 600 while the extension guide part 1100 is lifted up as the guide part 1100 is fastened to the non- 4E).

First, as shown in FIG. 4A, a hole 600 into which an anchor 1000 is to be inserted is exposed by a drill (not shown) or the like on a concrete surface or an installation surface 601 which is the front surface of an ALC panel floor FC. The diameter of the hole 600 is preferably equal to or smaller than the outer diameter of the cylinder 1510 of the non-rotating cylinder 1500. In the hole working step, an operation of cleaning the inside of the hole 600 drilled with a drill (not shown) may be performed concurrently.

When the hole 600 is formed, the rapid curing adhesive 700 is injected into the hole 600 as shown in FIG. 4B. Since the adhesive 700 is rapidly cured, the fastening operation must be fast and, most of all, there should be little motion when the wing 1310 expands.

This is because if the widening sleeve 1300 moves when the wing 1310 is widened, the hardened adhesive breaks and its function is lost.

In this embodiment, a structure is adopted in which the extension guide portion 1100 is rotated upward by using the tool T so that the widening sleeve 1300 does not move.

When the adhesive 700 is injected into the hole 600, the assembled anchor 1000 is inserted into the hole 600 as shown in FIGS. At this time, it is preferable to insert the rotation preventing piece 1550 so that the rotation preventing piece 1550 can penetrate.

4C, the lower end 1311 of the widening sleeve 1300 is hooked on the outer peripheral surface 1115 of the extension guide portion 1100 and the upper end of the widening sleeve 1300 and the upper end of the non- And the lower ends thereof are placed in contact with each other.

Further, since the non-rotating cylinder 1500 is inserted substantially in conformity with the diameter of the hole, the clearance between the non-rotating cylinder 1500 and the hole 600 is small.

When the anchor 1000 is inserted into the hole 600, after the tool T inserted through the inside of the non-rotating cylinder 1500 is aligned with the tool seat groove 1150 of the extension guide portion 1100 as shown in FIG. 4D When the tool T is rotated as shown in FIG. 4E, the extension guide portion 1100 is rotated together with the tool T, and is simultaneously lifted by the fastening.

In order to rotate the tool (T), take a caught posture with a slight downward force. Because of this posture, the non-rotating cylinder 1500 fastened to the extension guide portion 1100 also does not need to have a separate rising prevention member due to the reaction force acting downward.

In order to rotate the tool T, the conical portion 1110 does not exert an unreasonable force on the lower end 1311 of the widening sleeve 1300 due to the held posture in a state where the force is slightly lowered, The movement of the widening sleeve 1300 according to the widening of the widening sleeve 1310 can be minimized.

In addition, there is no fear of revolving of the extension guide portion 1100 due to the friction between the extension guide portion 1100 and the blade 1310,

In addition, since the extension guide portion 1100 rises while rotating, it is easy to expand (rather than zigzag shifting principle in which the distance is long but the force is low) rather than rotating vertically without rotating.

In addition, due to the upward rotation of the extension guide portion 1100, a scratch is formed in a spiral shape on the outer peripheral surface 1115 by the lower end 1311 of the widening sleeve 1300, and this spiral scratch has the same effect as the screw loosening, The guide portion 1100 is stably positioned at the final position.

The wing 1310 of the widening sleeve 1300 can be easily re-checked with the tool T even if the engagement force is weakened.

When fixing the anchor 1000 is completed, the workpiece B is placed on the construction surface 601 as shown in FIG. 5 and the fixture fixing bolts 200 are fastened to the non-rotating cylinder 1500.

6 shows a case where the heat insulating wall IW is formed on the wall surface of the concrete or the ALC panel FW in the case of the construction surface.

In this case, the thickness of the heat insulating material becomes thick, and the stability of the bonding is required.

That is, the fixing bolts 2000 are fixed to the fixture B and the anchor 1000 through the heat insulating wall IW and the support auxiliary bolts 200a are fastened to the fixture B under the fixing bolts 2000 Through the insulation wall (IW) and touch the wall of the concrete or ALC panel (FW).

By this support auxiliary bolt (200a), the vertical load lowering phenomenon due to the improvement in the thickness of the heat insulator which is soft is positioned at the lower part of the center part.

In addition, since the surface plate 210 is provided between the heat insulating material and the workpiece B, the surface of the adhering ground surface is widened by the action of the surface pressure, thereby preventing the heat insulating material from being damaged.

Thus, the anchor 1000 of the present embodiment is adapted to receive the bolts. Therefore, the length of the bolts 200 can be arbitrarily selected and used according to the size of the fixture B fixed to the anchor 1000 or the thickness of the heat insulating material. Is possible.

On the other hand, instead of inserting the above-described adhesive, a chemical tube (CT) filled with an adhesive or the like is introduced into the hole 600 as shown in Fig. 7A.

The chemical tube (CT) is filled in glass or vinyl, and it is very convenient to provide the tube with a different anchor according to the size of the hole 600 according to the capacity of the adhesive.

After the chemical tube CT is inserted into the hole 600, the anchor 1000 assembled as shown in FIG. 7B is inserted into the hole 600 to tear the chemical tube CT.

At this time, when the needle 1112 is formed on the lower surface 1111 of the conical portion 1110, the chemical tube CT can be easily trimmed.

When the anchor 1000 inserted with the chemical tube CT is inserted, the tool T is inserted into the tool seat groove 1150 as in the case of the above-described adhesive injection work (Fig. 7C) The extension guide portion 1100 screwed to the rotary guide portion 1100 moves along the non-rotating cylinder 1500 at the same time as rotating, and the wing is opened to the outside and fixed to the inner wall of the hole 600 (FIG.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art.

1000: anchor 1100: extension guide portion
1110: Cone part 1112: Needle part
1130: male thread shaft portion 1131: shaft rod
1133: male thread 1150: tool seat groove
1300: Expansion sleeve 1310: Wing
1320: incision groove 1500: non-rotating cylinder
1510: Cylinders 1530 and 1540: First and second depressed portions
1531, 1541: first and second female screws 1550:
CT: Chemical tube

Claims (7)

delete An extension guide portion including a conical portion that is wider than the upper surface of the conical portion, a male screw shaft portion extending from an upper surface of the conical portion, and a tool seat groove formed on an upper surface of the male screw shaft portion;
A widening sleeve including a plurality of vanes formed at the lower end of the conical portion by an incision groove;
And a non-rotating cylinder formed with a female screw to which the male screw shaft portion is fastened,
Wherein the extension guide portion extends while simultaneously rotating with respect to the non-rotating cylinder,
Wherein the non-rotating cylinder includes a cylindrical body having the female screw formed therein, and a rotation preventing piece formed on an outer peripheral surface of the cylindrical body.
The method of claim 2,
A first depressed portion and a second depressed portion each having a small inner diameter are formed in the cylinder,
Wherein the female screw includes a first female screw formed on the first depressed portion and a second female screw formed on the second depressed portion.
The method of claim 3,
The first depression is disposed on the upper side of the cylinder,
And the second depression is disposed on the lower side of the cylinder.
The method of claim 4,
The male screw shaft portion is fastened to at least a part of the second female screw,
And an object fixing bolt is fastened to the first female screw or the remaining part of the first female screw and the second female screw.
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